There are a few things that are really difficult to convey to students. I remember how hard it was to help my social studies students understand what caused the seasons. Yes, I taught a lot of science while teaching social studies. Distance and time, on the outset, seem simple. But comprehending the vastness of time, when looking at history, and distance, when looking at science (or visa-versa), are hard for us to comprehend. In the words of the source blog for this infographic,

Humans are good at a lot of things, but putting time in perspective is not one of them. It’s not our fault – the span of time in human history, and even more so in natural history, are so vast compared to the span of our life and recent history that it’s almost impossible to get a handle on it.

There are lots of great infographics and visualizations that help to compare all manner of vastness, and here’s one.